Divide relational-query package into query and schemas.

--HG--
rename : relational-query/src/Database/Relational/Schema/DB2Syscat/Columns.hs => relational-schemas/src/Database/Relational/Schema/DB2Syscat/Columns.hs
rename : relational-query/src/Database/Relational/Schema/DB2Syscat/Keycoluse.hs => relational-schemas/src/Database/Relational/Schema/DB2Syscat/Keycoluse.hs
rename : relational-query/src/Database/Relational/Schema/DB2Syscat/Tabconst.hs => relational-schemas/src/Database/Relational/Schema/DB2Syscat/Tabconst.hs
rename : relational-query/src/Database/Relational/Schema/IBMDB2.hs => relational-schemas/src/Database/Relational/Schema/IBMDB2.hs
rename : relational-query/src/Database/Relational/Schema/PgCatalog/PgAttribute.hs => relational-schemas/src/Database/Relational/Schema/PgCatalog/PgAttribute.hs
rename : relational-query/src/Database/Relational/Schema/PgCatalog/PgClass.hs => relational-schemas/src/Database/Relational/Schema/PgCatalog/PgClass.hs
rename : relational-query/src/Database/Relational/Schema/PgCatalog/PgConstraint.hs => relational-schemas/src/Database/Relational/Schema/PgCatalog/PgConstraint.hs
rename : relational-query/src/Database/Relational/Schema/PgCatalog/PgNamespace.hs => relational-schemas/src/Database/Relational/Schema/PgCatalog/PgNamespace.hs
rename : relational-query/src/Database/Relational/Schema/PgCatalog/PgType.hs => relational-schemas/src/Database/Relational/Schema/PgCatalog/PgType.hs
rename : relational-query/src/Database/Relational/Schema/PostgreSQL.hs => relational-schemas/src/Database/Relational/Schema/PostgreSQL.hs
Update debianization.
Update dependency along with divided packages.
Add debianization for relational-schemas.
Update debianization.
Remove miss-added file.